5518811542 has 4 divisors (see below), whose sum is σ = 8278217316. Its totient is φ = 2759405770.

The previous prime is 5518811539. The next prime is 5518811579. The reversal of 5518811542 is 2451188155.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×5518811542² = 60914561672224835528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 5518811495 and 5518811504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1379702884 + ... + 1379702887.

It is an arithmetic number, because the mean of its divisors is an integer number (2069554329).

Almost surely, 2^5518811542 is an apocalyptic number.

5518811542 is a deficient number, since it is larger than the sum of its proper divisors (2759405774).

5518811542 is a wasteful number, since it uses less digits than its factorization.

5518811542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2759405773.

The product of its digits is 64000, while the sum is 40.

The square root of 5518811542 is about 74288.7040000026. The cubic root of 5518811542 is about 1767.1843411310.

Adding to 5518811542 its reverse (2451188155), we get a palindrome (7969999697).

The spelling of 5518811542 in words is "five billion, five hundred eighteen million, eight hundred eleven thousand, five hundred forty-two".